/Engine/Plugins/Online/OnlineSubsystemUtils/Source/OnlineSubsystemUtils/Public/VoiceInterfaceImpl.h
Finds a remote talker in the cached list
pointer to the remote talker or NULL if not found
virtual [FRemoteTalker](API\Plugins\OnlineSubsystem\Interfaces\FRemoteTalker) * FindRemoteTalker ( const [FUniqueNetId](API\Runtime\CoreOnline\Online\FUniqueNetId) & UniqueId )